<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title>盒子模型</title>
<style>
div{
	width: 150px;
	height: 150px;
	border: 1px solid black;
}
</style>
	</head>
<body>
	<div>div1</div>
	<div>div2</div>
</body>
</html>
